Rubber sole Elastic Upper: Soft knit upper is stretchy and comfortable Selected high-quality materials, breathable, lightweight and comfortable. Stylish, unique, durable, safe and environmentally friendly materials Solid rubber outsole covers high-impact areas for more durability and less weight Travel and on-the-go use: Removable memory foam cushioned insole provides maximum comfort and reduces sweat and odor. Sizing Tip: If you normally wear a half size, we recommend taking one size up to ensure an overall fit.